Plotting Simple Data in R

Question

I have a comma separated file named foo.csv containing the following data:

scale, serial, spawn, for, worker
5, 0.000178, 0.000288, 0.000292, 0.0003         


        

Answer 1

You don't need the two lines:

scale <- data[1]
serial <- data[2]

as scale and serial are already set from the headers in the read.table.

Also scale <- data[1] creates an element from a data.frame

  data[1]
1     5
2    10
3    12
4    15

whereas scale from the read.table is a vector

5 10 12 15

and the plot(scale, serial) function expects vector rather than a data.frame, so you just need to do

plot(scale, serial)

One approach to plotting the other columns of data on the y-axis:

plot(scale,serial, ylab="")
par(new=TRUE) 
plot(scale,spawn,axes=F, ylab="", type="b")
par(new=TRUE) 
plot(scale,for., axes=F, ylab="", type="b")
par(new=TRUE) 
plot(scale,worker,axes=F, ylab="", type="b")

There are probably better ways of doing this, but that is beyond my current R knowledge....